I'm confused here…particularly with reviews on the Relax2013 girls winding up in the Studio section. If I remember from my Studio 1 and VIP days, those were Studios. You didn't need an appointment. Agencies also employ several girls but you have to call and make an appointment for the girl you wanted, a la True Companions. And the incall location may vary.
You could call ahead and request your fav if you wanted but the beauty of a Studio was, when the mood struck you, you just drove there, picked a girl out of a lineup and had your fun without calling ahead.
Can you do that with the Relax2013 girls?